Traffic-Friendly Driving. Summerlin’s rush-hour congestion on the 215 and 95 Freeways turns a manual clutch into a workout.
Preserve Your Drivetrain. Modern automatics reduce wheel-hop, protect driveline components, and offer lock-up torque converters for highway efficiency.
Accessibility & Enjoyment. Drivers of all ages appreciate the ease of an automatic—especially when tackling steep grades into Red Rock Canyon.
Enhanced Performance. Late-model automatics (4L80E, T56 automatics) offer more gears, overdrive ratios, and electronic controls for improved power delivery.
With over 200 transmission swaps completed, 777 Motorsports is Southern Nevada’s trusted expert for seamless, reliable conversions.
Common Automatic Transmission Options
Turbo Hydroboosted C4 & C6
General Motors’ Turbo Hydra-Matic 400 (C3) and 700R4 (C4) were stalwarts of ’60s–’80s Detroit muscle.
C4 (700R4): Overdrive 4-speed, bolt-in fit for many GM A- and F-bodies.
C6: Built for heavy-duty applications—ideal for trucks, full-size Chevys, and big-block Mopars.
Hydroboost Integration: Provides consistent brake assist when using vacuum-starved V8s or engine swaps.
4L60E / 4L80E GM Overdrives
Electronic control, lock-up torque converter, and 4.3–4.9 final drive compatibility.
4L60E: Light to mid-weight classics; versatile calibration.
4L80E: Built on a 700R4/C6 case, heavy-duty internals for big-block V8s and towing.
Benefits: Improved highway fuel economy, precise shift control via standalone ECU.
Tremec T56 & TKO Manuals-with-Auto-Like Ease
Though manual, these 6-speed transmissions paired with a G-Force automatic-style clutch actuator create a “manual-automatic” feel.
T56 Magnum: Handles up to 700 lb-ft torque; popular in restomods.
TKO 5-Speed: Compact Ford case, economical alternative with smooth ratios.
Ford FMX/FXC & Coyote-Compatible Autos
Ford’s FMX (3-speed) and C4-compatible FXC (4-speed) offer bolt-in options for Mustangs, Lincolns, and Broncos. For modern restomods:
10R80: Late-model Ford 8-speed; seamless shift points, integrated with Coyote swaps.
6R80 / 6R75: Six-speed automatics for moderate performance and improved drivability.
Choosing the Right Transmission for Your Ride
Consider these factors when selecting your automatic:
Vehicle Weight & Power. Lighter classics suit 700R4 or 4L60E; heavier or high-hp builds need 4L80E or C6 strength.
Desired Gearing & Overdrive. Four or six speeds with 0.70–0.80 OD ratios enhance highway cruising on Summerlin Parkway.
Electronic vs. Mechanical Control. ECM-controlled units allow advanced shifting strategies, lock-up control, and rev-matching.
Budget & Complexity. Simpler, mechanical-shift kits lower cost; full-ECU installs require harness work and tuning.
Preservation of Original Look. Adapter-plate solutions retain factory bellhousing orientation and shifter placement.
Our ASE-certified techs help you weigh trade-offs based on your car’s use—daily driver, weekend cruiser, or show car.
777 Motorsports Conversion Process
Step 1: Vision Session & Drivetrain Assessment
On-site at 3271 S Highland Dr or mobile in Summerlin.
Inspect bellhousing, crossmember, rear-end ratio, and driveshaft length.
Step 2: Kit Selection & Fitment Mock-Up
Use CAD to design mount brackets, crossmember relocation, and exhaust clearance.
Dry-fit transmission, torque converter, and shifter location.
Step 3: Fabrication & Installation
Motor-plate & adapter: Custom-machined or off-the-shelf kits for GM, Ford, Mopar.
Crossmember & driveshaft: Shorten or replace shaft; install reinforced mount.
Hydraulic-shift or electronic harness: Route lines, connectors, and down-shift switches.
Step 4: Tuning & Calibration
ECU Programming: For 4L60E/4L80E and modern automatics, calibrate line-pressure, shift points, and torque-converter lock-up.
Torque Converter Match: Choose 2,500–3,200 stall speeds based on engine output and driving style.
Step 5: Road-Test & Owner Handover
Heat-soak loops on East Desert Inn Rd to verify cooling and shifting under load.
Interior & Console Mods: Re-cut floor or console for automatic shifter fit—coordinated with Interior Restorations.
Bundling services saves on labor and ensures cohesive integration.
Service Areas We Cover
Serving Summerlin and all of Southern Nevada, including:
Summerlin North & South (The Ridges, The Trails, Sun City Summerlin)
Las Vegas (Paradise, Spring Valley)
Henderson (Green Valley, Anthem, Inspirada)
North Las Vegas (Aliante, Eldorado)
Boulder City & Lake Mead
Our shop at 3271 S Highland Dr #709 offers enclosed transport within 45 miles for turnkey conversion projects.
Frequently Asked Questions
Can I keep my factory pedal assembly? → Yes—most pedal brackets accommodate a mechanical kick-down cable or hydraulic switch; we adapt the factory mount wherever possible.
Will the conversion void my classic’s originality? → We offer reversible mounts and keep original components on file, so you can return to manual if desired.
How often should I service my new automatic? → We recommend fluid and filter changes every 30 k mi or 24 months—whichever comes first, especially in desert climates.
Can you restore my original torque converter? → Yes—rebuilt torque converters with updated lock-up clutches are available for many classic automatics.
Do I need to update my driveshaft? → Often yes—slip-yoke eliminators and proper phasing are vital; we balance and shrink-tube driveshafts for safety.
How long before I can drive my car again? → Basic kits often complete in 2 days; electronic conversions with tuning take up to 5 days.
Is a shifter column conversion required? → Column-shift classics need a neutral-safety and PRNDL indicator wiring; we handle both mechanical and electronic solutions.
Ready to Shift Gears Effortlessly?
Swap the clutch for cruise control and enjoy Summerlin’s scenic roads like never before. Call (844) 777-1296 or schedule your transmission conversion today. At 777 Motorsports, we deliver smooth, reliable automatic swaps that honor your classic’s heritage while modernizing its drive.
